What does Psalm 18:13 mean?
David continues his poetic description of how the Lord rescued him from Saul, and all of David's other enemies (2 Samuel 22:1). This extends the symbolic message David has used so far, including earthquakes, smoke, fire, darkness, and so forth (Psalm 18:7–12).In his speech to Job, Elihu referred to the Lord's voice as sounding like thunder and rumbling accompanied by lightning (Job 37:2–5). Psalm 29:3–5 states "the God of glory thunders…The voice of the LORD is powerful; the voice of the LORD is full of majesty…[it] breaks the cedars." These descriptive statements show how awesome and powerful God is.
Unbelievers have every reason to fear the Lord's voice when He pronounces judgment on them, but believers cherish the voice of the Lord. He speaks comforting and assuring words to believers (2 Peter 1:3–4).